*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    /*display: flex;*/
    /*flex-direction:column;*/
    /*justify-content: center;*/
    /*align-items: center;*/
    /*height: 100vh;*/
    /* background: url("background.jpg") no-repeat; */
    /*background-size:cover;*/
    background-color: #8EC5FC;
    background-image: linear-gradient(62deg, #8EC5FC 0%, #E0C3FC 100%);
}
.container-fluid {
    background-color: rgba(255, 255, 255, 0.8); /* 半透明背景 */
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1); /* 轻微阴影 */
    border-bottom: 1px solid #ddd; /* 底部边框 */
    position: sticky; /* 让导航栏固定在顶部 */
    top: 0;
    z-index: 1000; /* 确保在页面顶部显示 */
}
